QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

9km NNE of Los Molinos, CA

· 22 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Tehama County 17 kmButte County 60 kmGlenn County 62 kmShasta County 75 kmColusa County 102 kmPlumas County 104 kmYuba County 109 kmTrinity County 110 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 1.7 (md)
Depth
22 km below the surface
Felt
no reports yet
Nearest
Tehama County, 17 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2181 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 930,000× the energy of this one
  3. Around the size people start to feel M 3.0 83× the energy of this one
  4. This earthquake M 1.7 about 11 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 40.0870, -122.0448. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Tehama County, CA 17 km (10 mi) ESE of here earthquakes near Tehama County
Butte County, CA 60 km (37 mi) NW of here earthquakes near Butte County
Glenn County, CA 62 km (38 mi) NNE of here earthquakes near Glenn County
Shasta County, CA 75 km (47 mi) S of here earthquakes near Shasta County
Colusa County, CA 102 km (64 mi) N of here earthquakes near Colusa County
Plumas County, CA 104 km (65 mi) W of here earthquakes near Plumas County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

43 earthquakes have been recorded within 50 km since this one.

  1. 2.3 24km NNE of Forest Ranch, CA
  2. 1.9 9km ESE of Millville, CA
  3. 1.8 11km ESE of Millville, CA
  4. 1.6 7km WSW of Shingletown, CA
  5. 2.3 9km WSW of Shingletown, CA
  6. 1.8 10km ESE of Millville, CA
  7. 2.4 16km SSE of Mineral, CA
  8. 1.5 8km SSE of Mineral, CA
  9. 1.7 7km SSE of Mineral, CA
  10. 1.6 9km S of Mineral, CA
  11. 2.9 6km NNE of Hamilton City, CA
  12. 2.5 6km NW of Chico, CA
  13. 2.5 5km NNE of Hamilton City, CA
  14. 1.8 4km NNE of Hamilton City, CA
  15. 1.6 15km SSW of Mineral, CA

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.